class/System.Core/System.Security.Cryptography/AesCryptoServiceProvider.cs

   1 //
   2 // System.Security.Cryptography.AesCryptoServiceProvider class
   3 //
   4 // Authors:
   5 //      Sebastien Pouliot (sebastien@ximian.com)
   6 //
   7 // Copyright (C) 2008 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Security.Permissions;
  30
  31 using Mono.Security.Cryptography;
  32
  33 namespace System.Security.Cryptography {
  34
  35         [HostProtection (SecurityAction.LinkDemand, MayLeakOnAbort=true)]
  36         public sealed class AesCryptoServiceProvider : Aes {
  37
  38                 public AesCryptoServiceProvider ()
  39                 {
  40                 }
  41
  42                 public override void GenerateIV ()
  43                 {
  44                         IVValue = KeyBuilder.IV (BlockSizeValue >> 3);
  45                 }
  46
  47                 public override void GenerateKey ()
  48                 {
  49                         KeyValue = KeyBuilder.Key (KeySizeValue >> 3);
  50                 }
  51
  52                 public override ICryptoTransform CreateDecryptor (byte[] rgbKey, byte[] rgbIV)
  53                 {
  54                         return new AesTransform (this, false, rgbKey, rgbIV);
  55                 }
  56
  57                 public override ICryptoTransform CreateEncryptor (byte[] rgbKey, byte[] rgbIV)
  58                 {
  59                         return new AesTransform (this, true, rgbKey, rgbIV);
  60                 }
  61
  62                 // I suppose some attributes differs ?!? because this does not look required
  63
  64                 public override byte[] IV {
  65                         get { return base.IV; }
  66                         set { base.IV = value; }
  67                 }
  68
  69                 public override byte[] Key {
  70                         get { return base.Key; }
  71                         set { base.Key = value; }
  72                 }
  73
  74                 public override int KeySize {
  75                         get { return base.KeySize; }
  76                         set { base.KeySize = value; }
  77                 }
  78 #if false
  79                 public override int FeedbackSize {
  80                         get { return base.FeedbackSize; }
  81                         set { base.FeedbackSize = value; }
  82                 }
  83
  84                 public override CipherMode Mode {
  85                         get { return base.CipherMode; }
  86                         set { base.CipherMode = value; }
  87                 }
  88
  89                 public override PaddingMode Padding {
  90                         get { return base.PaddingMode; }
  91                         set { base.PaddingMode = value; }
  92                 }
  93 #endif
  94                 public override ICryptoTransform CreateDecryptor ()
  95                 {
  96                         return CreateDecryptor (Key, IV);
  97                 }
  98
  99                 public override ICryptoTransform CreateEncryptor()
 100                 {
 101                         return CreateEncryptor (Key, IV);
 102                 }
 103
 104                 protected override void Dispose (bool disposing)
 105                 {
 106                         base.Dispose (disposing);
 107                 }
 108         }
 109 }